package elitech.vietnam.myfashion.widgets;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapShader;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Shader;
import android.graphics.drawable.BitmapDrawable;
import android.util.AttributeSet;
import android.widget.ImageView;

public class CircularImageView extends ImageView {

    private int borderWidth = 4;
    private int viewWidth;
    private int viewHeight;
    private Bitmap image;
    private Paint paint;
    private Paint paintBorder;
    private BitmapShader shader;
    
    public CircularImageView(Context context) {
            super(context);
            setup();
    }

    public CircularImageView(Context context, AttributeSet attrs) {
            super(context, attrs);
            setup();
    }

    public CircularImageView(Context context, AttributeSet attrs, int defStyle) {
            super(context, attrs, defStyle);
            setup();
    }
    
    private void setup()
    {
            // init paint
            paint = new Paint();
            paint.setAntiAlias(true);
            
            paintBorder = new Paint();
            setBorderColor(Color.GRAY);
            paintBorder.setAntiAlias(true);                
    }
    
    public void setBorderWidth(int borderWidth)
    {
            this.borderWidth = borderWidth;
            this.invalidate();
    }
    
    public void setBorderColor(int borderColor)
    {                
            if(paintBorder != null)
                    paintBorder.setColor(borderColor);
            
            this.invalidate();
    }
    
    private void loadBitmap()
    {
            BitmapDrawable bitmapDrawable = (BitmapDrawable) this.getDrawable();
            
            if(bitmapDrawable != null)
                    image = bitmapDrawable.getBitmap();
    }
    
    @SuppressLint("DrawAllocation")
    @Override
public void onDraw(Canvas canvas)
    {
            //load the bitmap
            loadBitmap();
                                    
            // init shader
            if(image !=null)
            {                        
                    shader = new BitmapShader(Bitmap.createScaledBitmap(image, canvas.getWidth(), canvas.getHeight(), false), Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
                    paint.setShader(shader);
                    int circleCenter = viewWidth / 2;
    
                    // circleCenter is the x or y of the view's center
                    // radius is the radius in pixels of the cirle to be drawn
                    // paint contains the shader that will texture the shape
                    canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter + borderWidth, paintBorder);
                    canvas.drawCircle(circleCenter + borderWidth, circleCenter + borderWidth, circleCenter, paint);
            }                
    }
    
    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
    {
        int width = measureWidth(widthMeasureSpec);
        int height = measureHeight(heightMeasureSpec, widthMeasureSpec);            
        
        viewWidth = width - (borderWidth *2);
        viewHeight = height - (borderWidth*2);
        
        setMeasuredDimension(width, height);
    }
    
    private int measureWidth(int measureSpec)
    {
            int result = 0;
            int specMode = MeasureSpec.getMode(measureSpec);
            int specSize = MeasureSpec.getSize(measureSpec);

            if (specMode == MeasureSpec.EXACTLY) {
                // We were told how big to be
                result = specSize;
            } else {
                // Measure the text
                result = viewWidth;
                
            }

            return result;
    }
    
    private int measureHeight(int measureSpecHeight, int measureSpecWidth) {
    int result = 0;
    int specMode = MeasureSpec.getMode(measureSpecHeight);
    int specSize = MeasureSpec.getSize(measureSpecHeight);

    if (specMode == MeasureSpec.EXACTLY) {
        // We were told how big to be
        result = specSize;
    } else {
        // Measure the text (beware: ascent is a negative number)
        result = viewHeight;           
    }
    return result;
}
}
